Speed Calibration - Raymarine ST60 Owner's Handbook Manual

Chapter 4: Calibration
Intermediate calibration enables you to:
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To start Intermediate calibration, hold down the speed and trip keys for
approximately 4 seconds (see Intermediate calibration flow chart).

Speed calibration

The speed calibration procedure involves carrying out two runs over a
measured distance, to enable a calibration factor to be determined and
applied to your ST60 Speed instrument, to ensure optimum accuracy.
Each calibration run comprises outward and return legs, to minimise the
affect of tidal drift when the calibration factor is determined.
To carry out a speed calibration, start the Intermediate calibration
procedure and use the speed key to proceed to the Calibration run length
screen (see sheet 1 of the Speed calibration flow chart). Proceed with the
speed calibration as follows:
1. With the Calibration Run Length screen displayed, press the timer
2. Set the length of the intended calibration run, using either the timer
3. Press timer and reset keys together to commence the speed calibra-
4. Start first outward leg of the calibration run and as you pass the start
5. At the end of the outward leg, press the trip key again so that:
Check the instrument software version.
Check the instrument status - either MASTER (transducer con-
nected) or REPEATER (no transducer).
Carry out a calibration run over a measured distance to ensure accu-
rate speed readings.
and reset keys together to enter adjust mode. In this mode, the dis-
played run length flashes on and off.
key to decrement or the reset key to increment the run length value.
You can set any value between 0.25 and 2.50.
tion. The Cal status screen is displayed. The text at the top of the
screen alternates between START 1 and the calibration factor currently
applied.
point, press the trip key, so the screen shows OUTWARD at the top. As
the calibration run proceeds, the displayed value will increment.
The text RETURN is flashing at the top of the screen.
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• The displayed distance freezes. Note that this value will not be the
same as the measured distance due to errors introduced by tidal
flow.
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